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Finding the Fourth Proportional to 505,123.65, 697,085.10 and 275,695.56

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Solution

The fourth proportional to 505,123.65, 697,085.10 and 275,695.56 is: 380,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,123.65 : 697,085.10 = 275,695.56 : x
  2. Step 2: Convert to fraction form
    505,123.65/697,085.10 = 275,695.56/x
  3. Step 3: Cross multiply
    505,123.65x = 697,085.10 × 275,695.56
  4. Step 4: Simplify right side
    505,123.65x = 192,183,267,012.16
  5. Step 5: Solve for x
    x = 192,183,267,012.16/505,123.65
  6. Step 6: Final answer
    x = 380,467.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.